can you tell us what happened? >> shortly after midnight we received a call for a two week accident offing a prince georges county ambulance and an suv. >> reporter: what happened between the two? >> it appears the suv had crossed the double line coming in to path of the ambulance. the ambulance had to make a defensive maneuver to swerve an the suv ended up sideswiping the ambulance. >> reporter: so what happened to the three people inside of the suv, the passenger vehicle? i understand clearly they unfortunately did not make it. but were they transported to the hospital or were they pronounced dead on the scene. >> three occupants in the suv were pronounced dead at the scene. themes firefighters responded priority call and they have been transported for minor injuries and have been discharged. >> they had sirens going an the lights flashing. they were most certainly an ambulance rushing to the scene at the time of a crash. >> they were in response to an emergency call with lights and sirens. >> horrible situation